Can u help me?

She supports gay rights. That's what it usually means.

And why not ask her? We can't possibly know why she did that.

The B in LGBTQ stands for bisexual. Do you know what that means, right? You can be attracted to both males and females.

That's not saying she's outing herself as bisexual. But that's a possibility. Or that she is a good person who supports LGBTQ community.